1 | # $Id$ |
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2 | |
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3 | PyKota - Print Quotas for CUPS |
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4 | |
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5 | (c) 2003-2009 Jerome Alet <alet@librelogiciel.com> |
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6 | This program is free software: you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation, either version 3 of the License, or |
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9 | (at your option) any later version. |
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10 | |
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11 | This program is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 | |
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19 | ==================================================================== |
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20 | |
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21 | READ SPECIAL LICENSING AND REDISTRIBUTION TERMS IN THE FILE 'LICENSE' |
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22 | |
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23 | ==================================================================== |
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24 | |
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25 | PyKota features : |
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26 | ----------------- |
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27 | |
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28 | http://www.pykota.com/software/pykota/features/ |
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29 | |
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30 | ==================================================================== |
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31 | |
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32 | Planned features are described in the TODO file. |
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33 | |
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34 | Actually three (or an infinity of) page accounting methods are |
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35 | implemented : |
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36 | |
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37 | - The 'hardware' method consists in querying the printer (via SNMP |
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38 | or Netatalk or any other method of your choice) for its internal |
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39 | pages counter. |
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40 | This is done both at the beginning and at the end of a |
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41 | print job. The counters difference is then used to |
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42 | decrease the user's account balance or increase his quota usage. |
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43 | |
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44 | - The 'software' method consists in delegating the computation of the |
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45 | job's size in number of pages to any external command of your choice. |
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46 | The command can read the job's data from its standard input and MUST |
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47 | output the job's size on its standard output. Changes to the user |
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48 | account are reported immediately. PyKota by default internally |
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49 | uses the code from pkpgcounter which can handle a large number |
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50 | of Page Description Languages, and can parse documents produced |
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51 | either by GhostScript or by a number of native printer drivers. |
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52 | Of course this means you have to install pkpgcounter if you want to |
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53 | use the default PDL parser. |
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54 | An up-to-date list of supported Page Description Languages and their |
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55 | level of support is available from : |
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56 | |
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57 | http://www.pykota.com/software/pkpgcounter/ |
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58 | |
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59 | - The 'ink' method consists in using pkpgcounter's code to compute |
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60 | how much of each page is covered by ink in each color of a particular |
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61 | colorspace chosen between CMYK, CMY, RGB, and BW (grayscale). |
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62 | These values are then summed up together and multiplied by a set |
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63 | of coefficients defined in PyKota's configuration files. |
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64 | |
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65 | PyKota is known to work with most printers, excepted GDI ones (Windows |
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66 | only). At least one of the accounting methods above should work |
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67 | for you. If it's not the case, please report the problem : tell us |
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68 | the exact brand and model of the printer, if possible the driver used, |
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69 | and send some test files. |
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70 | |
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71 | ============================================================ |
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72 | |
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73 | SUPPORT CONTRACTS: |
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74 | ================== |
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75 | |
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76 | You can now purchase 8x5x365@NextBusinessDay Technical |
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77 | Support Contracts from us. The yearly fee is computed with |
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78 | the following formula : |
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79 | |
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80 | (100.0 * NbPrintServers) + (2.5 * NbPrinters) + (0.04 * NbUsers) EUROS. |
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81 | |
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82 | This fee includes the VAT, and a free subscription to Official |
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83 | PyKota packages. |
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84 | |
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85 | Please send an email to alet@librelogiciel.com if you're |
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86 | interested in purchasing such a contract. |
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87 | |
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88 | Remember that purchasing a support contract for Free Software like PyKota |
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89 | is a great way to show your appreciation for the work already being done |
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90 | on this project, and will help to improve this software in the future. |
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91 | |
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92 | ============================================================ |
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93 | |
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94 | INSTALLATION: |
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95 | ============= |
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96 | |
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97 | NB : |
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98 | ==== |
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99 | |
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100 | PyKota's documentation is available as DocBook SGML sources |
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101 | files in the pykota/docs directory. If you obtained an |
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102 | Official package, in the same directory you'll also find |
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103 | the documentation in HTML and PDF formats. Otherwise you |
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104 | have to compile it into HTML or PDF yourself by using |
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105 | the appropriate tools as installed on your system. |
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106 | |
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107 | PyKota's collaborative documentation is available from : |
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108 | |
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109 | http://www.pykota.com/wiki/ |
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110 | |
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111 | You may learn more about PyKota, if it fits your own organization, |
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112 | its internal working, and some potential performance drawbacks and |
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113 | how to avoid them, in a document created by Ryan Suarez at : |
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114 | |
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115 | http://archive.macosxlabs.org/forum/webcrossing_archive/documentation/Pykota_and_CUPS/Pykota_and_CUPS.html |
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116 | |
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117 | You may also find the following document interesting : |
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118 | |
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119 | http://es.tldp.org/Tutoriales/doc-openldap-samba-cups-python/ |
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120 | |
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121 | This document, written in Spanish by Sergio Gonzalez Gonzalez, |
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122 | describes the integration of PyKota into an OpenLDAP + Samba |
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123 | + CUPS installation. Even for people who can't read spanish |
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124 | this document is really interesting, and contains lots of |
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125 | screenshots. |
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126 | |
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127 | |
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128 | Prerequisite : |
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129 | -------------- |
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130 | |
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131 | See : |
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132 | |
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133 | http://www.pykota.com/wiki/Dependencies |
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134 | |
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135 | for an up-to-date list, or see below (maybe not up-to-date) : |
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136 | |
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137 | You need to have the following tools installed on the CUPS Server : |
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138 | |
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139 | - CUPS (http://www.cups.org). PyKota v1.27 requires CUPS v1.3.4 or higher. |
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140 | - Python v2.4 or higher (http://www.python.org) |
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141 | - eGenix' mxDateTime Python extension (http://www.egenix.com) |
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142 | - The pkpgcounter command line tool, version 1.56 or higher. This |
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143 | tool is now mandatory for PyKota to work. |
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144 | (http://www.pykota.com/software/pkpgcounter) |
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145 | - The pkipplib Python library (http://www.pykota.com/software/pkipplib) |
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146 | - The JAXML Python module to be able to dump datas in the XML format. |
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147 | (http://www.librelogiciel.com/software/) |
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148 | - The Python-PAM module if you need the pknotify command to be able |
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149 | to check usernames and passwords. (http://www.pangalactic.org/PyPAM) |
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150 | - The Python-SNMP module to query printers for their page counter. |
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151 | (http://pysnmp.sourceforge.net) |
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152 | IMPORTANT : version v4.x is now REQUIRED. |
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153 | Versions 3.x or earlier are not supported anymore. |
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154 | - The Python-OSD module to use the graphical print quota reminder. |
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155 | (http://repose.cx/pyosd/) |
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156 | - SNMP tools (specifically the snmpget command) if you prefer to |
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157 | use your own script to request query printers instead of PyKota's |
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158 | internal SNMP handling facilities, which is not recommended... |
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159 | (http://www.net-snmp.org). You probably don't need this. |
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160 | - Netatalk (specifically the pap command) if you plan to |
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161 | request your printer's lifetime page counter via AppleTalk. |
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162 | (http://netatalk.sourceforge.net). You probably don't need this. |
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163 | - The ReportLab Python module (http://www.reportlab.org) if you want |
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164 | to have PyKota generate nice banners, invoices or receipts in PDF for you. |
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165 | - The Python Imaging Library (aka PIL) module |
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166 | (http://www.pythonware.com/downloads) if you want to have PyKota |
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167 | generate nice banners, invoices or receipts in PDF for you. |
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168 | - PostgreSQL's PygreSQL Python extension and the PostgreSQL client |
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169 | libraries if you plan to use PostgreSQL as the database backend. |
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170 | (http://www.postgresql.org and http://www.pygreql.org) |
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171 | or |
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172 | - python-ldap Python module and the OpenLDAP client libraries |
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173 | if you plan to use an LDAP server as the database backend. |
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174 | (http://www.openldap.org and http://python-ldap.sourceforge.net) |
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175 | or |
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176 | - SQLite v3.2.7 and the SQLite libraries if you plan to use SQLite |
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177 | as the database backend (http://www.sqlite.org). You also need the |
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178 | PySQLite module v2.0.5 or higher (http://www.pysqlite.org) |
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179 | or |
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180 | - The MySQL-python bindings. |
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181 | IMPORTANT: If you are using MySQL 4.1, then MySQL-python must be |
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182 | version 1.2 or greater. Version 1.0 does not work correctly with 4.1. |
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183 | |
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184 | |
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185 | On Intel i386 architecture, and for performance reasons, it is |
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186 | suggested that you install the Python accelerator Psyco, available from : |
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187 | |
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188 | http://psyco.sourceforge.net |
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189 | |
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190 | Under Debian : |
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191 | |
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192 | $ apt-get install python-psyco |
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193 | |
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194 | Other architectures may be supported as well in the future, check |
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195 | this on Psyco's website. |
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196 | |
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197 | Installing Psyco is not mandatory, but may really speed the parsing |
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198 | of some print jobs. Don't install it if you don't want or don't have a |
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199 | supported architecture. |
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200 | |
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201 | You need to have the following tools installed on the database |
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202 | server : |
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203 | |
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204 | - PostgreSQL (http://www.postgresql.org) |
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205 | |
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206 | or |
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207 | |
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208 | - OpenLDAP, or any other LDAP server (http://www.openldap.org) |
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209 | |
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210 | or |
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211 | |
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212 | - SQLite, v3.2.7 or higher (http://www.sqlite.org). |
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213 | Beware : with SQLite the database server and the print |
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214 | servers MUST be the very same machine. |
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215 | |
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216 | or |
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217 | |
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218 | - MySQL 4.1 or higher. 5.x is recommended. |
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219 | |
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220 | This list of prerequisite software may change in the future, when |
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221 | PyKota will support more functionnalities you will be given |
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222 | alternatives. |
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223 | |
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224 | Of course the Print Server and the database server can be the |
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225 | very same machine if you've got a tiny network, or you can have |
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226 | multiple Print Servers all storing their quotas on the same database |
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227 | server if you've got a bigger network. (NB : with SQLite, the database |
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228 | can't be shared between several print servers) |
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229 | |
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230 | Hint : |
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231 | ------ |
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232 | |
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233 | - The Debian GNU/Linux distribution is to our knowledge the |
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234 | easiest distribution to install PyKota on, because almost all |
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235 | of PyKota dependencies are already included. |
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236 | We recommend you to use Debian's Etch distribution or |
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237 | more recent. PyKota works fine on Sarge, but some additional |
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238 | dependencies are missing in Sarge and have to be installed |
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239 | manually. |
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240 | |
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241 | Then : |
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242 | ------ |
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243 | |
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244 | Download the latest PyKota version from the Subversion tree : |
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245 | |
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246 | $ svn co http://svn.pykota.com/pykota/trunk pykota |
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247 | |
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248 | You can now check if the dependencies are correct by typing : |
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249 | |
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250 | $ python checkdeps.py |
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251 | |
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252 | An availability report for all the software needed by PyKota |
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253 | will be displayed : you'll have to install the missing |
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254 | software if you want PyKota to work correctly. |
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255 | |
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256 | To install the software, just type : |
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257 | |
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258 | $ python setup.py install |
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259 | |
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260 | You may need to be logged in with sufficient privileges (e.g. root) |
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261 | |
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262 | If you use Debian or Ubuntu, and want to use PostgreSQL as the |
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263 | database backend, just type : |
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264 | |
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265 | $ pksetup debian |
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266 | |
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267 | or : |
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268 | |
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269 | $ pksetup ubuntu |
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270 | |
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271 | and follow the instructions to install PyKota in interactive mode, then |
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272 | skip the remaining of the section below. |
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273 | |
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274 | Otherwise, you have to setup manually : |
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275 | |
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276 | Create a system user for PyKota : |
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277 | |
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278 | $ adduser --system --group --home /etc/pykota --gecos PyKota pykota |
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279 | |
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280 | Put the user your printing system is run as in the pykota system group : |
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281 | |
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282 | $ adduser lp pykota |
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283 | |
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284 | NB : on our system, the CUPS printing system runs as system user 'lp'. |
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285 | Please adapt this to your own system. |
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286 | |
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287 | Go to the initscripts/ subdirectory of PyKota's sources, and choose |
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288 | the appropriate storage backend for your configuration. Read carefully |
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289 | the associated README file, modify the initialization script to |
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290 | change the passwords, or, in the case of the LDAP backend, adapt it |
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291 | to your own LDAP DIT, and execute the initialization script |
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292 | to create an empty PyKota database. Upgrade scripts may be |
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293 | provided as well. NB : if you use PostgreSQL, a good way to |
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294 | make PyKota work first time is to modify PostgreSQL's pg_hba.conf |
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295 | to allow the 'trust' database connection mode. However once PyKota |
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296 | works it is HIGHLY RECOMMENDED TO CHANGE THIS TO A MORE SECURE |
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297 | VALUE. Look at the SECURITY document, PyKota's Official documentation |
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298 | and PostgreSQL's documentation for details on this subject. |
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299 | |
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300 | Copy the conf/pykota.conf.sample and conf/pykotadmin.conf.sample |
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301 | sample configuration files to ~pykota/pykota.conf and |
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302 | ~pykota/pykotadmin.conf |
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303 | The installation script usually copies these files into /usr/share/pykota |
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304 | |
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305 | NB : You can move PyKota's configuration files elsewhere, they will |
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306 | be searched first in user pykota's home directory, then in /etc/pykota. |
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307 | |
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308 | You need to adapt these files to your own needs. Especially you may |
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309 | have to create sections named after your own printers, and change |
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310 | the administrator's email address which by default is |
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311 | root@localhost. Read and try to understand these two very well |
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312 | commented files, so that you'll encounter less problems later. |
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313 | |
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314 | The rest of the installation depends on your printing system : |
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315 | |
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316 | - CUPS Printing System : |
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317 | |
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318 | Once and for all : |
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319 | |
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320 | Modify CUPS' cupsd.conf to make CUPS listen to 127.0.0.1:631 |
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321 | INSTEAD OF to an unix domain socket, in addition to any |
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322 | external network interface CUPS might already be listening to. |
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323 | |
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324 | Create a symbolic link to the cupspykota backend |
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325 | in CUPS's backend directory : |
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326 | |
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327 | $ cd /usr/lib/cups/backend |
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328 | $ ln -s /usr/share/pykota/cupspykota cupspykota |
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329 | |
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330 | If you use CUPS v1.2 or higher, please do this as well : |
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331 | |
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332 | $ chmod 700 /usr/share/pykota/cupspykota |
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333 | |
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334 | This allows the cupspykota backend to support other |
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335 | backends which must be run as user root, like the |
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336 | lpd backend for example. |
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337 | |
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338 | Restart CUPS so that the new backend can be detected. |
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339 | |
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340 | $ /etc/init.d/cupsys restart |
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341 | |
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342 | for example under Debian, or any similar command depending |
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343 | on your operating system of choice. |
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344 | |
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345 | For new printers : |
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346 | |
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347 | Go to CUPS management interface (http://localhost:631) |
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348 | and choose the appropriate PyKota managed device depending |
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349 | on the type of printer you use. For example, if your |
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350 | printer is waiting on : |
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351 | |
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352 | socket://myprinter.example.com:9100 |
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353 | |
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354 | Then choose : |
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355 | |
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356 | cupspykota:socket://myprinter.example.com:9100 |
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357 | |
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358 | Configure your printer as usual. |
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359 | |
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360 | Now double check /etc/pykota/pykota.conf |
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361 | |
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362 | You should manually create a section named after the |
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363 | printer you've just added, unless you have set |
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364 | all options globally. |
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365 | |
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366 | The new pkturnkey command can help you with correct settings |
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367 | for your printers. To have pkturnkey give you some hints |
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368 | about what to put into pykota.conf for a particular |
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369 | print queue, just use its --doconf command line switch : |
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370 | |
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371 | $ pkturnkey --doconf TheNameOfThePrintQueue |
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372 | |
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373 | pkturnkey will try to tell you what is the best accounting |
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374 | method for each printer and will print some lines you'll |
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375 | just have to copy&paste in the appropriate sections in |
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376 | /etc/pykota/pykota.conf |
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377 | |
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378 | For more informations about what pkturnkey can do for you, |
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379 | see pkturnkey's manual page or use the --help command |
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380 | line switch : |
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381 | |
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382 | $ pkturnkey --help | less |
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383 | |
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384 | That's all. |
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385 | |
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386 | For existing print queues : |
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387 | |
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388 | You want to route the print queue through PyKota, |
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389 | and you can do this in several manners. |
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390 | |
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391 | $ pkprinters --add --cups TheNameOfThePrintQueue |
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392 | |
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393 | or |
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394 | |
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395 | if your printer's DeviceURI is something like : |
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396 | |
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397 | socket://myprinter.example.com:9100 |
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398 | |
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399 | then you can do this : |
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400 | |
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401 | $ pkprinters --add TheNameOfThePrintQueue |
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402 | $ lpadmin -p TheNameOfThePrintQueue \ |
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403 | -v cupspykota://socket://myprinter.example.com:9100 |
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404 | |
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405 | Finally, you could do it manually by modifying the |
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406 | the DeviceURI lines in /etc/cups/printers.conf : |
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407 | You would have to preprend 'cupspykota://' in front |
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408 | of what is already on these lines. For example, replace : |
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409 | |
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410 | DeviceURI socket://myprinter.example.com:9100 |
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411 | |
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412 | with : |
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413 | |
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414 | DeviceURI cupspykota://socket://myprinter.example.com:9100 |
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415 | |
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416 | or : |
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417 | |
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418 | DeviceURI cupspykota://socket://myprinter.example.com:9100 |
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419 | |
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420 | Save the file and restart CUPS for the changes to take effect. |
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421 | |
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422 | Here too, you may find it interesting to use the pkturnkey command as |
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423 | described above to help with manual configuration of the file |
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424 | /etc/pykota/pykota.conf |
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425 | |
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426 | Now you can begin to populate the PyKota's database with printers, |
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427 | users and groups : |
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428 | |
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429 | Add printers and users to the quota system and set their quota values : |
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430 | |
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431 | You can either use pkturnkey, or do the same things manually by |
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432 | using the pkprinters, pkusers and edpykota command line tools : |
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433 | |
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434 | Create printers : |
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435 | |
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436 | $ pkprinters --help |
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437 | |
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438 | will tell you how to create, manage or delete printers and |
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439 | printers groups. |
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440 | |
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441 | $ pkprinters --add --charge 0.05 hp2100 |
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442 | |
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443 | would add the printer named hp2100 with a price per page |
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444 | of 0.05 unit. |
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445 | |
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446 | Create users : |
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447 | |
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448 | $ pkusers --add --limitby balance --balance 10.0 jerome |
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449 | |
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450 | would create user jerome and give him ten credits to spend |
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451 | on any printer. |
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452 | |
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453 | Finally create print quota entries : |
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454 | |
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455 | $ edpykota --add --printer hp2100 john paul george ringo |
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456 | |
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457 | This will create print quota entries for The Beatles on |
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458 | printer hp2100. The print quota entry holds the number of |
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459 | pages printed on a particular printer for a particular |
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460 | user, as well as optional page limits to be used instead |
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461 | of balance limits. See pkusers and edpykota's manual |
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462 | pages for details. |
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463 | |
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464 | Your users now should be able to print but not exceed their |
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465 | printing quota. |
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466 | |
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467 | To see printer quota usage on printer hp2100, you can use : |
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468 | |
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469 | $ repykota --printer hp2100 |
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470 | |
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471 | or : |
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472 | |
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473 | $ repykota |
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474 | |
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475 | which will print quota usage for all users on all printers, |
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476 | along with totals, if you are a PyKota Administator. If you are |
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477 | a regular user, only your own quota report will be produced. |
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478 | |
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479 | You can also use these commands : |
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480 | |
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481 | $ pkusers --list |
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482 | $ edpykota --list |
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483 | |
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484 | $ pkusers --list john paul george ringo |
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485 | $ edpykota --list --printer hp2100 john paul george ringo |
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486 | |
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487 | Quota reports are also available remotely by using the CGI script |
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488 | printquota.cgi provided in the cgi-bin/ subdirectory. You can |
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489 | also use the CSS stylesheet present in the stylesheets/ subdirectory |
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490 | and put it at your web server's DocumentRoot, to benefit from a nicer |
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491 | look, especially quota violations will appear in different colors. |
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492 | |
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493 | For additionnal security concerns, please give a look at the SECURITY |
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494 | file which is part of this software. |
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495 | |
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496 | To diagnose a problem when something doesn't work as expected, |
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497 | please read this FAQ entry : |
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498 | |
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499 | http://otrs.librelogiciel.com/otrs/public.pl?ID=2 |
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500 | |
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501 | ============================================================ |
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502 | |
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503 | Mailing lists : |
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504 | --------------- |
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505 | |
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506 | A mailing list is dedicated to PyKota, you can subscribe to it |
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507 | or consult its archives at : |
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508 | |
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509 | http://lists.pykota.com/mailman/listinfo/pykota |
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510 | |
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511 | This mailing list is the preferred way to obtain support, because |
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512 | all members can help and can also benefit from the solutions |
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513 | proposed by other members. |
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514 | |
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515 | Another mailing list, dedicated to developers, is available from : |
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516 | |
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517 | http://lists.pykota.com/mailman/listinfo/pykota-devel |
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518 | |
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519 | In this mailing list you can discuss implementation details, bugs, |
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520 | ideas, and so on. All commit messages are also sent to this list. |
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521 | |
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522 | Posts by non-members are rejected. |
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523 | |
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524 | The mailing lists language is english and only english. |
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525 | |
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526 | IRC : |
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527 | ----- |
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528 | |
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529 | You can also chat with us : |
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530 | |
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531 | /server irc.freenode.net |
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532 | /join #pykota |
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533 | |
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534 | Preferred language on this channel is english, but french |
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535 | is also accepted. Try to avoid exposing complex problems |
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536 | in french because english speaking people on the channel |
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537 | wouldn't benefit from the solutions. |
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538 | |
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539 | PyKota's main author is known as 'tamere' on IRC. |
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540 | |
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541 | Bug Tracker : |
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542 | ------------- |
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543 | |
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544 | You can report bugs to our bug tracker on the development website |
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545 | at : |
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546 | |
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547 | http://trac.pykota.com |
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